Remove IO::Path.watch
Remove IO::Path.watch

The method was entirely unspecced and not part of Perl 6 language.

Removed from Rakudo in:
https://github.com/rakudo/rakudo/commit/21fd2c4ade

tbrowder/doc,MasterDuke17/doc,stmuk/doc,gfldex/doc,jonathanstowe/doc,antquinonez/doc,dmaestro/doc,perl6/doc,antquinonez/doc,perl6/doc,perl6/doc,antquinonez/doc,stmuk/doc,MasterDuke17/doc,jonathanstowe/doc,gfldex/doc,tbrowder/doc,MasterDuke17/doc,antquinonez/doc,dmaestro/doc,stmuk/doc,tbrowder/doc,gfldex/doc,antquinonez/doc,stmuk/doc,perl6/doc,gfldex/doc,perl6/doc,jonathanstowe/doc,jonathanstowe/doc,MasterDuke17/doc,dmaestro/doc,dmaestro/doc,jonathanstowe/doc,tbrowder/doc,stmuk/doc,gfldex/doc,dmaestro/doc